norwood



r '(Mo deL) J. T. GARDNER.

AXLE BOX FOB. VEHICLE WHEELS.

UNITED STATES PATENT-OFFICE. h

JESSE T. GARDNER, or VAIDEN, MISSISSIPPI, assrenon OF ONE -HALF T nnnnnn THOMPSON, OF SAME PLACE.

AXLE-BOX FOR VEHICLE-WHEELS.

SPECIFICATION forming part of Letters Patent No. 255,077, dated March 14:, 1882.

Application filed December 2], 1881. (ModeL) To all whom it may concern: i

Be it known that I, JESSE T. GARDNER, of Vaiden, in the county of Carroll, and in the State of Mississippi, have invented certain 5 new and useful Improvements in Vehicle- Boxes; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification.

This invention relates to certain improvements in hub boxes or bushings; audit has for its object, first, to provide certain means whereby the box will be secured and firmly held in the hub; and, secondly, in so constructing this means that it will also act to afford additional strength to the hub.

The above-mentioned objects I accomplish by the devices illustrated in the accompanying drawings.

That this device may be more fully understood, and that it may be distinguished from other previous devices of a somewhat similar 95 character, I desire to make the following observations, by which the public may readily ascertain the advance in this art which my invention has effected.

Hub-boxes have been made with external 0 screw-threaded portions; but in such case the threaded portions covered only a small part of the box at each end thereof and thus left an intermediate space. WVhen the hub becomes wet from exposure or otherwise the blank space of the box above referred to,whieh forms a chamber between the box and the hub,

more clearly the annular flange at its inner or larger end.

The letter A indicates an ordinary wooden vehiclehub, and B a metallic bushing or lining for the same. The said bushing consists of a metallic sleeve which is made tapering on the exterior and is screw-threaded, as shown. The said sleeve is adapted to fit in the opening through the hub, which is internally screw-threaded to engage the screwthreads on the outside of the sleeve or bushing. The inner end of the sleeve or bushing is provided with a flange, D, which is adapted to set in a suitable recess, E, in the hub, and the flange is diametrically recessed, as indicated by the letter F, for the reception of a key, by means of which the sleeve or bushing 6 may be turned for insertion or removal. When the bushing is screwed home in the hub the annular flange D braces against the inner end thereof, and the continuous screwthread of the bushing draws against the fibers of the hub throughout its entire length, and thus sustains and afiords additional strength thereto, which is a feature of practical importance, and which forms the second part of myinvention, as above set out. I The outer end of the sleeve or bushing may be made to project from the hub, and may be provided with a screw-nut, by means of which it may be further secured.

As thus constructed, it will be perceived that, owing to the tapering form of the screwthreaded portions of the hub and the bushing, the sleeve or bushing can be inserted without danger of bursting the hub, as is the case when it is driven in.

Having thus described my invention, What I claim, and desire to secure by Letters Patent, is-

1. A bushing consisting of a tapering metallic tube or sleeve, having a continuous ex- 0 ternal screw-thread, and an annular flange at its inner end, the sleeve being adapted to be screwed into the hub and bind its fibers together from end to end, and the flange to brace and bear against its inner end, as shown and 5 described, and for the purposes set forth.

2. In combination with the externa1ly-taper-. In testimony whereof I affix my signature, ing threaded bushing, flanged as described in presence of two witnesses, this 8th day of and recessed diametrically, the internally ta- December, 1881.

pered and screw-threaded hub, having a seat J. T. GARDNER. 5 for the flange on the sleeve, the two being se- Witnesses:

cured together substantially in the manner E. W. NORWOOD,

andfor'the purpose specified. R, W. NORWOOD. 

